[jibi]

1 - Connect handset to computer via USB.
2 - Install Desktop Manager 4.0 software.
3 - Install Handheld 4.0 software.
4 - Step 2 should have the option to open Desktop Manager at the end of installation. Check it.
5 - Desktop Manager should prompt to install latest software.
- If not, then double-click on Application Loader.
- If this has no updates, close Desktop Manager and go to C:\Program Files\Common Files\Research In Motion\AppLoader and delete or rename Vendor.xml. Open Desktop Manager.
6 - Install handheld software to handheld (automated, just about).
7 - If you want to resolve IM issue, disconnect handheld from computer and follow steps a few posts above.